Valve-spring retainer



Patented Mar. 25, i924.. n Y' ERNEST STOAKES, OF BIRMINGHAM, ENGLAND.

'VALVE-SPEELT@ RETAINER.

Application :filed Becember 22, lfi. Serial No. 525.5246.

T all whom t may concern.' subsequently thereto, the latter for the pur- Be it known that I, ERNEST S'ronnss, pose of putting the spring into t'iirther com- 55 subject of the King of Great Britain, re-V pression than what is accomplished by the siding at Q06 Soho Road, Handsworth, Biraction of the tappet lifting valve.

mingham, England, draper, have invented A mushroom valve always has a removcertain new and useful improvements in able spring abutment for the outer end oi' Valve-Spring Retainers, of which the iolthe spring, and the invention uses this abut` 60 lowing is n Specification c nient for the one end oi 'the cage to engage,

The inventii'm provides the hereinafter deso that said outer abutment comes away 1o scribed and claimed improved appliance Yfor with the cage and the spring to be handled use for easily, conveniently and quickly disas a one-piece unit1 but the invention in its assembling andl assembling a mushroom desirable form also uses a second or inner 65 valve having a coiled spring; for example, abutment washer or piece for the spring to a valve commonly used in an internal combe enga-ged by the other end ot the cage bastion engine. and to be removable with said cage, so that Said appliance is adapted t0 be hand apin 'this form the two abutment washers or plied to, or put onto, the coiled spring while pieces, the cage and the spring, are removed 70 the valve members are assembled, and the 21S 0I1p1 0 unit ready ior putting into tappet lifted lifting the Valve, to hold said POSltlOl glllspring in such compressed condition, and The lHVeIllOll H1 yltS dGSlrable forms is is distinctive in its construction and applirepresented by the accompanying drawings. cation by it and Said Spring being remcv- Fig. l shows a vertical section applied to 75 able from the valve members as a one piece 2 Valve While 'Elle later lS llftel by the tappa't when said members are disassembled; pet, this OTID uSllflg VO abutment WaSlleIS that is to say, in taking down the valve for for the ends of the spring. v

grinding, for repair, for replacement of any lfig. 2 shows the one-piece unit comprising 0f the members 017 for any other purpose, spring, cage and abutment washers removed 80 the appliance and the spring, held in comlom the valve members. i pressed condition bythe appliance, come Flg.. 3 1S a side elevation oi Fig. 2.

away as a one piece part ready for easy re- Fgl S loOliIle at the left-hand side placement, an elevation oi Fig.

Said appliance may take various forms Flg- 5 1S 1 GOP-S161@ plan 0f Flg. 2- 85 consistent with the distinguishing feature Fig. 6 is an underside plan of Fig. 2. aforesaid, for example, it may be a cage Fig. 7 shows the inner abutment Washer or enclosing member formed of two parts Spilte.

similar to half tubes having end projec- Fig. 8 shows the cage separate. Y tions, ribs 0r flanges and applied t0 the lli/ith reference to Figs. l to 8 the'valve 90 spring while the later is in compressed conplug, the valve seating and the parts applydition to cont-ain said spring, support same lng and fitting the one to the other are of axially against distortion, and at the saine the usual form. The seating is at a; and the time hold itin compressed condition so that bead and stem oi' the plug are respectively the spi-ing and the appliance can be handled lettered c and c2. The coiled Spring w sur 95 and entirely removed as a 0ne-pece unit. rounding the stem c2 operates in compres- Prei'erably said appliance is in the form of a sion between .inner and outer abutment washhalf cage rigidly constructed and having ers cl and e. The inner abutment washer end projections, ribs or iianges, to engage d is additional to normal practice and is the spring. part of the appliance according to the in- A furtherform of appliance constructs vention, but the outer abutment washer e the cage orn a number of parts having the is substantially normal practice although 50 end projections, ribs or flanges and operaits shape may be conveniently changed'for tive aforesaid, but also arranged so that the the purpose of the invention. The key c3 length of the cage may be adjusted either forming the end abutment of the stem for before the cage is applied to the spring or the washer e is applied to a slot c1 of said half circle A ing they eng/zig n:e, or just over the seti-on or axis, so the,I from distortion.

zi/Yhile the vulve 'nenihers assembled sind the teppet lifted litting the veli-e plug and further compr i tire spring. the enge g is put onto the spring so that its hook projections g2 engage the abut ent wiishers d and e in the manner subsienneliyshown, :Liter which the tnppet isjowei'ed permit of the lrey c3 being removed end the valve plug withdrawn This enables the cage abutment washers Z and e and spring to be handled and removed as a one-piece unit within which the coiled spring is held in Compressed condition es represented by Fios. 8 to 6.' Said unit is therefore always ready for ressseinbling the Teli-re members, the cage g being removed when the members of the valve are in the saine positions they were when the enge was pnt on.

it will be elezirly understood that if the normal lift of the tappet is not suiieient to put the spring 02 into suliieient compression to suit the length of the cage7 :in intervening piece may be forced between the end of the teppet and the end of the stem to give a further lift to the valve plug, or the cage g may be built so that its length may be shortened after it has been put into engagement with the washers to further compress the spring and shorten the length of the unit.

Having now described my invention what claim and desire to secure by Letters Patent is l. ydevice for mounting and dismounting on a valve stem a spring having washers at is ends.) comprising a tubular cage having hooked members projecting beyond the ends oi' the tubular portion end adapted to fitover seid wisners, .said tubular member being cnt nwey longitudinally to forni an openi throughout its length.

2. e device for n'iountingand dismounting on n #sive stein a spring having washers it ends) cmnprisingl a cage, in rnbers "rom diemetrically opposite per- E il tions an( beyond ends of -the cage sind being adapted to lit over said washers cage being cut away longitudinally to form en opening` throughout its length.

3. device adapted for mounting a helical spi- C on a valve stem, a valve stem comprising e tubular cage havingopenings en one side and et its ends, and members les;tending from the end of said cage advise-ent the' side opening' andV adapted to hook ever said washers. i

jan @Alliance for the purpose described eonrnrising wesh-ers adapted to be mounted on a valve stem constituting removable sbutinents for the ends of acoil spring and n :age termed with en iaibntment et e eh end ior engagement with the respective washers by a sidewise movement and operative to hold both washers together with the .spr-'Ags safely compressed between them whereby the spring may be held compressed and may be removed from its valve stem together with seid parts as a unit.

in testimony whereof l have hereunto set my hand in presence or' two subscribing witnesses. i

ERNEST STOAKES.

llVitnesses Y Jol-1N P. FUERY, D. LEAKER. 

